Just a Minim

#include<bits/stdc++.h>
using namespace std;

int n;
map<int, double> m;
double s;

int main() {
    cin >> n;
    int a[6] = {0, 1, 2, 4, 8, 16};
    double b[6] = {2, 1, 0.5, 0.25, 0.125, 0.0625};
    for (int i = 0; i < 6; i++)
        m[a[i]] = b[i];
    for (int i = 0; i < n; i++){
        int q;
        cin >> q;
        s += m[q];
    }
    //cout << s << endl;
    printf("%lf\n", s);
    return 0;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED